19
Installing the Water Heater
Navien recommends connecting the water heater as
the first water heater downstream of the gas meter,
to ensure a sufficient gas supply.
The water heater is
recommended to be
the first appliance to
be connected to the
gas supply line.
Gas Supply Line
Gas Meter’s Capacity ≥ Total Gas
Capacity of Connected Appliances
3.3 Connecting the Gas Supply
WARNING
●
Before connecting the gas supply, determine
the gas type and pressure for the water heater
by referring to the rating plate. Use only
the same gas type indicated on the rating
plate. Using a different gas type will result
in abnormal combustion and malfunction
of the water heater. Gas supplies should be
connected by a licensed professional only.
●
To avoid damaging the connectors on
the water heater, use two wrenches when
tightening pipings to the water heater. Use
one wrench to prevent the connector at the
water heater from turning, and use the other
wrench to tighten the connection. Damaged
connectors may result in system leaks.
●
Properly support the piping with hangers. Do
not allow the piping to be supported by the
water heater or its accessories.
●
Ensure that the gas piping is protected
from physical damage and freezing, where
required. Failure to follow these instructions
could result in gas leakage, and result in fire,
explosion, property damage, severe personal
injury, or death.
●
The appliance and its gas connection must
be leak tested before placing the appliance in
operation.
●
To avoid danger from explosion and fire, do
not use flame to check for a gas leak. Perform
a bubble test on the joints to check for gas
leaks. If a leak exists, bubbles will form at
the leaking joint. A gas leak could result in
substantial property damage, severe personal
injury, or death.
●
This water heater cannot be converted from
natural gas to propane or vice versa without
a Navien gas conversion kit. Do not attempt a
field conversion of this water heater without a
Navien gas conversion kit. Doing so will result
in dangerous operating conditions and will
void the warranty.
Summary of Contents for NPE-180A2
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